CN103874142B - A kind of method and apparatus for being used to switch user equipment - Google Patents
A kind of method and apparatus for being used to switch user equipment Download PDFInfo
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- CN103874142B CN103874142B CN201210544998.2A CN201210544998A CN103874142B CN 103874142 B CN103874142 B CN 103874142B CN 201210544998 A CN201210544998 A CN 201210544998A CN 103874142 B CN103874142 B CN 103874142B
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Abstract
The invention provides a kind of method and apparatus for the user equipment of a cell to be switched to its neighbor cell.The communication-related information of user equipment in PRB use informations and the cell of the invention according to the cell, selection can be switched to the user equipment of the neighbor cell of the cell；And send the first solicited message to selected user equipment；And receive the communication measurement report that the selected user equipment is provided；And reported according to the communication measurement and the neighbor cell offer of the cell, the synthesis active volume information of the neighbor cell, the neighbor cell switched to needed for all or part of user equipment in the selected user equipment is determined, and performs corresponding user equipment handover operation.The possibility of handover operation failure caused by the possibility and user equipment that service quality is reduced when being switched to neighbor cell The present invention reduces selected user equipment are refused by neighbor cell.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of it is used to the user equipment of a cell switching to its phase
The method and apparatus of adjacent cell.
Background technology
In 3GPP LTE systems, load-balancing technique needs to realize the uneven distribution of traffic load in multiple minizones,
It needs to cause Radio Resource to be able to maintain that higher utilization rate, the service quality of ongoing session as far as possible preferably as far as possible
Maintenance, drop rate are lasting relatively low, and it may switch user equipment again, so that communication load is transferred to from the higher cell of load
The cell not being fully utilized.
As can be seen here, load balancing needs in higher cell is loaded selection user equipment and to switch to load relatively low
Cell.However, the load-balancing technique of prior art may cause user equipment be switched after communication quality decline, it is also possible to
The cell that user equipment needs are switched to is caused to cause handoff failure because the reasons such as excessive user equipment can not be serviced.
The content of the invention
It is an object of the invention to provide a kind of method for the user equipment of a cell to be switched to its neighbor cell
And device.
It is used to the user equipment of a cell switching to its neighbor cell there is provided a kind of according to an aspect of the present invention
Method, wherein, this method comprises the following steps：
A is according to the communication-related information of the user equipment in the PRB use informations and the cell of the cell, and selection can
It is switched to the user equipment of the neighbor cell of the cell；
B sends the first solicited message to selected user equipment, and first solicited message is used to ask the user equipment
The communication measurement that it is provided with the neighbor cell of the cell is reported；
C receives the communication measurement report that the selected user equipment is provided；
D is reported according to the communication measurement and the neighbor cell offer of the cell, the synthesis of the neighbor cell
Active volume information, determine to switch to needed for all or part of user equipment in the selected user equipment is adjacent small
Area, and perform corresponding user equipment handover operation.
According to another aspect of the present invention, additionally provide a kind of for the user equipment of a cell to be switched into its phase
The device of adjacent cell, wherein, the device includes：
Selection device, the communication phase for the user equipment in the PRB use informations and the cell according to the cell
Information is closed, selection can be switched to the user equipment of the neighbor cell of the cell；
Dispensing device, for sending the first solicited message to selected user equipment, first solicited message is used for please
The user equipment is asked to provide the communication measurement report of itself and the neighbor cell of the cell；
Reception device, for receiving the communication measurement report that the selected user equipment is provided；
Switching device, for according to communication measurement report and the neighbor cell offer of the cell, the phase
The synthesis active volume information of adjacent cell, determines to cut needed for all or part of user equipment in the selected user equipment
The neighbor cell shifted to, and perform corresponding user equipment handover operation.
Compared with prior art, the present invention has advantages below：1) it with reference to use when selecting to be switched user equipment
The communication-related information of family equipment, so as to greatly reduce service quality when selected user equipment is switched to neighbor cell
The possibility of reduction；2) invention also contemplates that the synthesis active volume of neighbor cell, so as to greatly reduce user equipment by phase
Adjacent cell is refused, and causes the possibility of handover operation failure；3) when the PRB of cell uses relatively low, load balancing is not performed, so that
Reduce processing load.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is a preferred embodiment of the invention for the user equipment of a cell to be switched into its neighbor cell
Method flow diagram；
The schematic diagram for the PRB stock numbers that Fig. 2 discharges for needs；
The schematic diagram for the PRB stock numbers that Fig. 3 can discharge for selected user；
Fig. 4 is a preferred embodiment of the invention for the user equipment of a cell to be switched into its neighbor cell
The structural representation of device.
Same or analogous reference represents same or analogous part in accompanying drawing.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is a preferred embodiment of the invention for the user equipment of a cell to be switched into its neighbor cell
Method flow diagram.The method of the present embodiment is main to be realized by a device.Preferably, the device can be located in base station；Or, should
Device can be distributed, and its part is located in base station, partly in the multiple cells for belonging to base station.
S1, step S2, step S3 and step S4 are comprised the steps according to the method for the present embodiment.
In step sl, use of the device according to where it or where part in the PRB use informations and the cell of cell
The communication-related information of family equipment, selection can be switched to the user equipment of the neighbor cell of the cell.
Wherein, the PRB use informations can be used to indicate that the behaviour in service of PRB in the cell, such as the PRB use informations
It may include but be not limited to：Total PRB utilization rates (PRB usage), the PRB utilization rates of GBR traffic, the PRB utilization rates of non-GBR traffic
Deng.
Wherein, the communication-related information of the user equipment includes the communication money between the cell and the user equipment
The related information such as source, quality, distribution.Preferably, the communication-related information includes but is not limited at least one of following：
1) communication quality information of user equipment.
For example, the service quality information of user equipment, such as QoS guarantee situation；In another example, the channel quality of user equipment
Information, such as SINR, SNR.
Preferably, the communication quality information of the user equipment is poorer, and its possibility for being chosen to switch to neighbor cell is got over
It is high.
2) PRB resource consumptions (PRB consumption) information of user equipment.
Preferably, the PRB resource consumptions of user equipment are higher, and the possibility that it is chosen to switch to neighbor cell is higher.
3) distribution of user equipment is believed with retaining priority (ARP, Allocation and RetentionPriority)
Breath.
Preferably, the distribution of user equipment is lower with retaining priority, and it is chosen the possibility for switching to neighbor cell
It is higher.
It should be noted that it should be appreciated by those skilled in the art that above-mentioned lifted communication-related information example is only more
Illustrate technical scheme, rather than limitation of the present invention well.
Specifically, user of the device according to where it or where part in the PRB use informations and the cell of cell sets
Standby communication-related information, the mode that selection can be switched to the user equipment of the neighbor cell of the cell includes but is not limited to：
1) user equipment of the device directly according to where it or where part in the PRB use informations and the cell of cell
Communication-related information, selection can be switched to the cell neighbor cell user equipment.
For example, PRB use informations include PRB overall availability, and following rule is pre-set：When always using for PRB
Rate discharges 5 user equipmenies when being higher than 90%, and when PRB overall availability is between 80% to 90%, 3 users of release set
It is standby, 1 user equipment is discharged when PRB utilization rate is between 70% to 80%, when PRB utilization rate is less than 70%,
Do not discharge user equipment.Then device is 83% according to current PRB utilization rates, it is determined that 3 user equipmenies of release are needed, and according to
From low to high, selection needs to be switched to 3 user equipmenies of neighbor cell the communication quality information of user equipment.
2) device determines that the cell needs the PRB moneys discharged according to the PRB use informations and the predetermined load upper limit
Measure in source；And according to the PRB stock numbers for needing to be unloaded and the communication-related information of the user equipment, selection can be cut
Shift to the user equipment of the neighbor cell of the cell.
For example, referring to Fig. 2, wherein TH0 represents predetermined load balanced thresholding, i.e. the predetermined load upper limit, and TH1 represents CAC
The thresholding of (Admission Control), TH2 represents the currently practical PRB consumed resources of cell, in actual use, TH1 and TH2
It can be close value；Then device can determine that the PRB stock numbers more than TH0, as shown in Figure 2 the PRB resources between TH0 and TH2
Amount difference, is the PRB stock numbers of cell uplink or the release of descending needs, if it is 92% that TH0, which is 70%, TH2, then 92%-
70%=22%, if cell total resources quantity is 50000 PRB each seconds, 22% correspondence 11000 PRB each second；And
And, device integrates the QoS guarantee situation, PRB consumed resources information and ARP information of each user equipment in the cell, right
Each user equipment is ranked up, wherein, QoS guarantee situation is poorer, PRB consumed resources are higher, ARP lower grades, then should
The sequence of user equipment is higher；Then, device sorts from high to low according to user equipment, selects one or more users to set
It is standby, also, selected user equipment PRB consumed resource summations should be greater than or equal to need discharge PRB stock numbers, such as
The PRB quantity of the selected user equipment consumption of device should be greater than or equal to 11000PRB/S in this example.
It should be noted that the PRB consumed resources summation of selected user equipment may not be exactly equal to needs
The PRB stock numbers of release, therefore, the PRB consumed resources summation of selected user equipment can be more than the PRB moneys for needing to discharge
Source is measured, for example, referring to Fig. 3, device have selected 3 user equipment (UE)s 1, UE2 and UE3, and the PRB of 3 user equipmenies
The summation of consumed resource, namely, it is contemplated that switch the cell after 3 user equipmenies and can be obtained PRB stock numbers more than super
Go out TH0 thresholdings part, the PRB stock numbers that needs discharge.
It should be noted that in this implementation, if PRB use informations are less than the predetermined load upper limit, device is not selected
User equipment.
3) communication-related information of user equipment of the device in the PRB use informations of the cell, the cell and
Whether the time that customer equipment load equilibrium switches to the cell exceedes scheduled time threshold value, and selection can be switched to the cell
Neighbor cell user equipment.
Wherein, customer equipment load equilibrium switches to the cell and represents that the user equipment, by the solution of the present invention, is such as adopted
With the mode shown in the step S1 to S4 of the present invention, the cell is switched to.
Wherein, device is selected according to the communication-related information of the user equipment in the PRB use informations and the cell of cell
Select the mode and foregoing implementation 1 of user equipment) or it is 2) same or similar, it will not be repeated here.This implementation with it is foregoing
Implementation 1) or difference 2) include：When customer equipment load equilibrium switches to the time of the cell not less than scheduled time threshold
During value, device does not select the user equipment as needing to be switched to the user equipment of neighbor cell.
4) device determines that the cell needs the PRB being released according to the PRB use informations and the predetermined load upper limit
Stock number；And according to the communication-related information of user equipment and user in the PRB stock numbers for needing to be unloaded, the cell
Whether the time that equipment load balance switches to the cell exceedes scheduled time threshold value, and selection can be switched to the phase of the cell
The user equipment of adjacent cell.
Wherein, device determines that the cell needs the PRB being released according to PRB use informations and the predetermined load upper limit
Stock number；And according to the communication-related information of user equipment in the PRB stock numbers and the cell for needing to be unloaded, selection
The mode of the user equipment of the neighbor cell of the cell can be switched to, with foregoing implementation 2) it is same or similar, herein not
Repeat again.This implementation and foregoing implementation 2) difference include：When customer equipment load equilibrium switches to the cell
When time is not less than scheduled time threshold value, device does not select the user equipment as needing the user for being switched to neighbor cell to set
It is standby.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to the limit of the present invention
System, it should be appreciated by those skilled in the art that the PRB use informations and the cell of any cell according to where it or where part
In user equipment communication-related information, selection can be switched to the cell neighbor cell user equipment realization side
Formula, should be included in the scope of the present invention.
In step s 2, user equipment sends the first solicited message, first solicited message to selected user equipment
Communication measurement for asking the user equipment to provide itself and the neighbor cell of the cell is reported；Preferably, the communication measurement
Report includes the communication strength between user equipment and each neighbor cell；It is highly preferred that the communication measurement is reported as event A4
(Event A4)。
It should be noted that step S1 and step S2 have no absolute sequencing, device can determine institute in step sl
After the user equipment being allowed a choice, then perform step S2, it is desirable to which each selected user equipment provides its communication measurement respectively
Report；Or, in step sl, device often selects one or more user equipmenies, you can perform step S2, ask this or
Multiple user equipmenies provide communication measurement report.
In step s3, device receives the communication measurement report that selected user equipment is provided.
Then, in step s 4, device is provided according to each selected user equipment communication measurement report and institute
The neighbor cell offer of cell, the synthesis active volume information of the neighbor cell are provided, determine that the selected user sets
The neighbor cell switched to needed for all or part of user equipment in standby, and perform corresponding user equipment handover operation.
Wherein, the synthesis active volume information of a cell represents the available PRB stock numbers of the cell, as shown in Figure 2.
Preferably, comprehensive active volume can be determined based on the thresholding of cell call access control with the difference of current PRB usage amounts,
Such as it is equal to TH1-TH2, wherein, if difference is less than 0, it is determined that comprehensive active volume is 0.
Preferably, in the present embodiment, each cell can periodically constantly being integrated active volume information be sent to it
Neighbor cell；Or, when the device of one cell of correspondence is triggered execution step S1, (triggering step S1 situation will be rear
Illustrate in continuous embodiment), the synthesis active volume that device asks the neighbor cell of the cell to provide it the grade neighbor cell is believed
Breath.Preferably, the synthesis active volume information can be by X2 interface come the interaction between neighbor cell；It is highly preferred that the synthesis can
It is can be included in capacity information in load information (load information), together with the other information in the load information, such as
Hardware load configured information (Hardware Load Indicator), transport network layer load instruction information (Transport
Network Level Load Indicator), Radio Resource utilization rate (include total PRB of up-link and downlink
The PRB utilization rates of utilization rate, the PRB utilization rates of GBR traffic and non-GBR traffic) etc., the interaction between neighbor cell together.
Preferably, when the synthesis active volume of a neighbor cell is enough, such as comprehensive active volume is more than one in advance
The value that sets or more than indicating PRB resource consumption of the neighbor cell as optimal all user equipmenies in being reported in communication measurement
During amount, it is determined that it is adjacent small to indicate that the neighbor cell switches to this for optimal all user equipmenies in being reported in communication measurement
Area；When the synthesis active volume part of a neighbor cell is enough, such as it integrates active volume and is merely greater than in communication measurement report
When the PRB consumed resources that the neighbor cell is optimal certain customers' equipment are indicated in announcement, it may be determined that will be in communication measurement report
Indicate that the neighbor cell switches to the neighbor cell for optimal certain customers' equipment in announcement, and will refer in communication measurement report
Show that the neighbor cell switches to other for optimal other users equipment and integrates the enough neighbor cells of active volume；When all phases
When the synthesis active volume of adjacent cell is not enough, such as comprehensive active volume is zero or during less than a value set in advance, dress
Put and user equipment is no longer switched into neighbor cell.
For example, the user equipment selected in cell by device includes UE4, UE5, UE6, UE7 and UE8, and the cell has 3
Individual neighbor cell, respectively cell A, cell B and cell C；The communication for each user equipment that device is received in step s3
Measurement report includes information as shown in table 1 below：
| User equipment | Optimal neighbor cell | Suboptimum neighbor cell | Worst neighbor cell |
| UE4 | A | C | B |
| UE5 | A | C | B |
| UE6 | B | C | A |
| UE7 | B | A | C |
| UE8 | B | A | C |
Table 1
Also, the synthesis active volume information that device receives cell A is zero, cell B synthesis active volume information is
175, cell C synthesis active volume information are 561；Then device is according to indicated by the report of UE6, UE7 and UE8 communication measurement
The synthesis active volume of optimal neighbor cell be not zero, it is determined that UE6, UE7 and UE8 are switched into neighbor cell B, and perform
Corresponding handover operation, such as sends user equipment handover request to neighbor cell B, so that the corresponding switching of neighbor cell B feedbacks
Perhaps, so that UE6, UE7 and UE8 are switched into neighbor cell B etc.；Also, device is according to UE4 and UE5 communication measurement report
The synthesis active volume for accusing indicated optimal neighbor cell is zero, and the synthesis active volume letter of both suboptimum neighbor cells
Breath is not zero, it is determined that UE4 and UE5 are switched into neighbor cell B, and performs corresponding handover operation.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to the limit of the present invention
System, it should be appreciated by those skilled in the art that it is any according to each selected user equipment provide communication measurement report and
Synthesis active volume information that the neighbor cell of the cell is provided, the neighbor cell, determines the selected user
The neighbor cell switched to needed for all or part of user equipment in equipment, and perform corresponding user equipment handover operation
Implementation, should be included in the scope of the present invention.
As a kind of preferred scheme, step S4 can further comprise following step S41, step S42 and repeat step S41
And the step of S42.
In step S41, device is reported according to the communication measurement of selected user equipment, selected user equipment
PRB resource consumption informations and the synthesis active volume information of each neighbor cell, are determined complete in selected user equipment
The neighbor cell switched to needed for the user equipment that portion or part do not switch, and perform corresponding user equipment handover operation；
In step S42, device is according to the PRB consumption informations of the user equipment switched, and it is adjacent small that renewal user equipment is switched to
The synthesis active volume information in area；Also, device repeats step S41 and S42, set until the user not switched is not present
It is standby, or, the synthesis active volume information of all neighbor cells is equal to or less than predetermined volumes threshold value.
For example, predetermined volumes threshold value is 2, the communication measurement report of user equipment (UE) 4 to UE8 is included as shown in Table 1, and
And, the synthesis active volume information that device receives cell A is zero, and cell B synthesis active volume information is 175, cell C's
Comprehensive active volume information is 561, and UE4 to UE8 PRB consumed resources are respectively 40,50,80,30 and 100.
In step S41, device reports indicated optimal neighbor cell A synthesis according to UE4 and UE5 communication measurement
Active volume information is zero, it is determined that UE4 and UE5 wouldn't be switched, also, device is according to UE6, UE7 and UE8 PRB resource consumptions
Measure summation=80+30+100=210 optimal neighbor cell Bs indicated more than the communication measurement report of three synthesis and can use and hold
Information is measured, it is determined that selecting summation PRB consumed resources larger two user equipment (UE)s 6 and UE7 from UE6, UE7 and UE8, is cut
Shift to neighbor cell B.
Then, in step S42, device has switched to neighbor cell B according to UE6 and UE7, and both PRB resources disappear
Consumption is respectively 80 and 30, and neighbor cell B synthesis active volume information is adjusted into 65.
Then, device does not switch according to there remains user equipment (UE) 4, UE5 and UE8, continue to repeat step
Rapid S41, reports that indicated suboptimum neighbor cell C synthesis active volume 561 is more than two according to UE4 and UE5 communication measurement
The PRB consumed resources sum 90 of person, switches to neighbor cell C, and report signified according to UE8 communication measurement by UE4 and UE5
The suboptimum neighbor cell A shown synthesis active volume is zero, it is determined that wouldn't switch UE8.
Then, device repeats step S42, is 471 by neighbor cell C synthesis active volume information updating.
Then, the user equipment (UE) 8 that device does not switch according to there remains, continues to repeat step S41, according to
The synthesis active volume 471 of worst neighbor cell C indicated by UE8 communication measurement report is more than its PRB resource consumption 100,
UE8 is switched into neighbor cell C.
Then, device repeats step S42, is 371 by neighbor cell C synthesis active volume information updating.
Then, device terminates operation according to the current user equipment for being not present and not switching.
Preferably, when the PRB resource consumptions for all user equipmenies that a neighbor cell in step S41, need to be switched to
When sum is more than the synthesis active volume information of the cell, it can use with selecting user according to communication-related information in step S1
The similar mode of equipment, selection actually switches to the user equipment of the neighbor cell.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to the limit of the present invention
System, it should be appreciated by those skilled in the art that any according to the report of the communication measurement of selected user equipment, selected user
The PRB resource consumption informations of equipment and the synthesis active volume information of each neighbor cell, determine selected user equipment
In the user equipment that does not switch of all or part needed for the neighbor cell that switches to, and perform corresponding user equipment switching behaviour
Make；And according to the PRB consumption informations of the user equipment switched, the synthesis for updating the neighbor cell that user equipment is switched to can
Use capacity information；And the first two steps are repeated, up to the user equipment not switched is not present, or, all neighbor cells
Comprehensive active volume information has been equal to or less than the implementation of predetermined volumes threshold value, should be included in the scope of the present invention.
The present invention with reference to the communication-related information of user equipment when selecting to be switched user equipment, so as to subtract significantly
The possibility that service quality is reduced when selected user equipment is switched to neighbor cell is lacked；In addition, invention also contemplates that
The synthesis active volume of neighbor cell, is refused by neighbor cell so as to greatly reduce user equipment, causes handover operation to fail
Possibility.
One of preferred scheme as the present invention, the method for the present embodiment is additionally included in the following steps performed before step S1
Suddenly：Device judges whether the PRB use informations of the cell meet the first predetermined condition；And ought judge that the PRB is used
When information meets first predetermined condition, the step S1 is performed.
Wherein, whether first predetermined condition includes but is not limited to the PRB use informations of cell and is set in advance higher than one
Fixed value etc..
Preferably, when the PRB use informations for judging cell meet first predetermined condition, phase from device to the cell
Adjacent cell sends the synthesis active volume information of the cell, and ask neighbor cell provide its integrate active volume information, with
The comprehensive active volume information is exchanged between the cell cell adjacent thereto.
In this preferred scheme, when the PRB of cell uses relatively low, load balancing is not performed, so as to reduce processing load.
It should be noted that the method for the present invention, is particularly behaviour wherein related to load calculating, the triggering of load balancing
Make, uplink and downlink can be divided to perform respectively.
Fig. 4 is a preferred embodiment of the invention for the user equipment of a cell to be switched into its neighbor cell
The structural representation of device.The device of the present embodiment includes selection device 1, dispensing device 2, reception device 3 and switching device
4。
User equipment of the selection device 1 according to where it or where part in the PRB use informations and the cell of cell
Communication-related information, selection can be switched to the cell neighbor cell user equipment.
Wherein, the PRB use informations can be used to indicate that the behaviour in service of PRB in the cell, such as the PRB use informations
It may include but be not limited to：Total PRB utilization rates (PRB usage), the PRB utilization rates of GBR traffic, the PRB utilization rates of non-GBR traffic
Deng.
Wherein, the communication-related information of the user equipment includes the communication money between the cell and the user equipment
The related information such as source, quality, distribution.Preferably, the communication-related information includes but is not limited at least one of following：
1) communication quality information of user equipment.
For example, the service quality information of user equipment, such as QoS guarantee situation；In another example, the channel quality of user equipment
Information, such as SINR, SNR.
Preferably, the communication quality information of the user equipment is poorer, and its possibility for being chosen to switch to neighbor cell is got over
It is high.
2) PRB resource consumptions (PRB consumption) information of user equipment.
Preferably, the PRB resource consumptions of user equipment are higher, and the possibility that it is chosen to switch to neighbor cell is higher.
3) distribution of user equipment is believed with retaining priority (ARP, Allocation and RetentionPriority)
Breath.
Preferably, the distribution of user equipment is lower with retaining priority, and it is chosen the possibility for switching to neighbor cell
It is higher.
It should be noted that it should be appreciated by those skilled in the art that above-mentioned lifted communication-related information example is only more
Illustrate technical scheme, rather than limitation of the present invention well.
Specifically, selection device 1 is related according to the communication of the user equipment in the PRB use informations and the cell of cell
Information, the mode that selection can be switched to the user equipment of the neighbor cell of the cell includes but is not limited to：
1) use of the selection device 1 directly according to where it or where part in the PRB use informations and the cell of cell
The communication-related information of family equipment, selection can be switched to the user equipment of the neighbor cell of the cell.
For example, PRB use informations include PRB overall availability, and following rule is pre-set：When always using for PRB
Rate discharges 5 user equipmenies when being higher than 90%, and when PRB overall availability is between 80% to 90%, 3 users of release set
It is standby, 1 user equipment is discharged when PRB utilization rate is between 70% to 80%, when PRB utilization rate is less than 70%,
Do not discharge user equipment.Then selection device 1 is 83% according to current PRB utilization rates, it is determined that need to discharge 3 user equipmenies,
And, selection needs to be switched to 3 user equipmenies of neighbor cell according to the communication quality information of user equipment from low to high.
2) selection device 1 includes the first determining device (not shown) and the first sub- selection device (not shown), and first is true
Device is determined according to the PRB use informations and the predetermined load upper limit, determines that the cell needs the PRB stock numbers discharged；The
One sub- selection device is according to the PRB stock numbers for needing to be unloaded and the communication-related information of the user equipment, selection
The user equipment of the neighbor cell of the cell can be switched to.
For example, referring to Fig. 2, wherein TH0 represents predetermined load balanced thresholding, i.e. the predetermined load upper limit, and TH1 represents CAC
The thresholding of (Admission Control), TH2 represents the currently practical PRB consumed resources of cell, in actual use, TH1 and TH2
It can be close value；Then the first determining device can determine that the PRB stock numbers more than TH0, as shown in Figure 2 between TH0 and TH2
PRB stock number differences, are the PRB stock numbers of cell uplink or the release of descending needs, if it is 92% that TH0, which is 70%, TH2, then
92%-70%=22%, if cell total resources quantity is 50000 PRB each seconds, 22% 11000 PRB of correspondence are per second
Clock；；Also, the first sub- selection device integrates the QoS guarantee situation of each user equipment in the cell, PRB consumed resources letter
Breath and ARP information, are ranked up to each user equipment, wherein, QoS guarantee situation is poorer, PRB consumed resources are higher,
ARP lower grades, then the sequence of the user equipment is higher；Then, the first sub- selection device according to user equipment sort by height
To low, select one or more user equipmenies, also, selected user equipment PRB consumed resource summations should be greater than or
Equal to the PRB stock numbers for needing to discharge, the PRB quantity of the selected user equipment consumption of device should be greater than or be equal in such as this example
11000PRB/S。
It should be noted that the PRB consumed resources summation of selected user equipment may not be exactly equal to needs
The PRB stock numbers of release, therefore, the PRB consumed resources summation of selected user equipment can be more than the PRB moneys for needing to discharge
Source is measured, for example, referring to Fig. 3, device have selected 3 user equipment (UE)s 1, UE2 and UE3, and the PRB of 3 user equipmenies
The summation of consumed resource, namely, it is contemplated that switch the cell after 3 user equipmenies and can be obtained PRB stock numbers more than super
Go out TH0 thresholdings part, the PRB stock numbers that needs discharge.
It should be noted that in this implementation, if PRB use informations are less than the predetermined load upper limit, device is not selected
User equipment.
3) selection device 1 includes the second sub- selection device (not shown), and the second sub- selection device is according to the PRB of the cell
Use information, the communication-related information of user equipment in the cell and customer equipment load equilibrium switch to the cell when
Between whether exceed scheduled time threshold value, selection can be switched to the cell neighbor cell user equipment.
Wherein, customer equipment load equilibrium switches to the cell and represents that the user equipment, by the solution of the present invention, is such as adopted
With the operation performed by the device of the present invention, the cell is switched to.
Wherein, the second sub- selection device is according to the communication of the user equipment in the PRB use informations and the cell of cell
Relevant information selects the mode and foregoing implementation 1 of user equipment) or 2) employed in it is same or similar, it is no longer superfluous herein
State.The operation that second sub- selection device is used and foregoing implementation 1) or difference 2) include：When customer equipment load is equal
When weighing apparatus switches to the time of the cell not less than scheduled time threshold value, the second sub- selection device does not select the user equipment as need
User equipment to be switched to neighbor cell.
4) selection device 1 determines that the cell needs to be released according to the PRB use informations and the predetermined load upper limit
PRB stock numbers；And according to the PRB stock numbers for needing to be unloaded, in the cell user equipment communication-related information with
And customer equipment load equilibrium switch to the cell time whether exceed scheduled time threshold value, it is small that selection can be switched to this
The user equipment of the neighbor cell in area.
Wherein, selection device 1 determines that the cell needs to be released according to PRB use informations and the predetermined load upper limit
PRB stock numbers；And believed according to the communication correlation of user equipment in the PRB stock numbers and the cell for needing to be unloaded
Breath, selection can be switched to the mode of the user equipment of the neighbor cell of the cell, with foregoing implementation 2) it is same or similar,
It will not be repeated here.The operation that selection device 1 is used in this implementation and foregoing implementation 2) difference include：When with
When family equipment load balance switches to the time of the cell not less than scheduled time threshold value, selection device 1 does not select the user to set
It is standby as needing to be switched to the user equipment of neighbor cell.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to the limit of the present invention
System, it should be appreciated by those skilled in the art that the PRB use informations and the cell of any cell according to where it or where part
In user equipment communication-related information, selection can be switched to the cell neighbor cell user equipment realization side
Formula, should be included in the scope of the present invention.
Dispensing device 2 sends the first solicited message to selected user equipment, and first solicited message is used to ask this
User equipment provides it and the communication measurement of the neighbor cell of the cell is reported；Preferably, communication measurement report includes using
Communication strength between family equipment and each neighbor cell；It is highly preferred that the communication measurement is reported as event A4 (Event A4).
It should be noted that absolute sequencing is had no between selection device 1 and operation performed by dispensing device 2,
Dispensing device 2 can redo, it is desirable to which each is selected after selection device 1 determines all selected user equipmenies
User equipment provides the report of its communication measurement respectively；Or, selection device 1 often selects one or more user equipmenies, sends dress
Put 2 and perform operation, ask one or more user equipmenies to provide communication measurement report.
Reception device 3 receives the communication measurement report that selected user equipment is provided.
Then, switching device 4 is provided according to each selected user equipment communication measurement report and the cell
Neighbor cell provide, the synthesis active volume information of the neighbor cell, determine in the selected user equipment
The neighbor cell switched to needed for all or part of user equipment, and perform corresponding user equipment handover operation.
Wherein, the synthesis active volume information of a cell represents the available PRB stock numbers of the cell, as shown in Figure 2.
Preferably, comprehensive active volume can be determined based on the thresholding of cell call access control with the difference of current PRB usage amounts,
Such as it is equal to TH1-TH2, wherein, if difference is less than 0, it is determined that comprehensive active volume is 0.
Preferably, in the present embodiment, each cell can periodically constantly being integrated active volume information be sent to it
Neighbor cell；Or, when the selection device 1 included in the device of one cell of correspondence is triggered execution operation, (triggering is selected
Selecting the situation of device 1 will illustrate in subsequent embodiment), device asks the neighbor cell of the cell to provide it the grade neighbor cell
Synthesis active volume information.Preferably, the synthesis active volume information can be by X2 interface come the interaction between neighbor cell；More
Preferably, the synthesis active volume information can be included in load information (loadinformation), together with the load information
Other information, such as hardware load configured information (Hardware Load Indicator), transport network layer load instruction information
(TransportNetwork Level Load Indicator), Radio Resource utilization rate (including up-link and descending chain
The PRB utilization rates of total PRB utilization rates on road, the PRB utilization rates of GBR traffic and non-GBR traffic) etc., together in neighbor cell
Between interaction.
Preferably, when the synthesis active volume of a neighbor cell is enough, such as comprehensive active volume is more than one in advance
The value that sets or more than indicating PRB resource consumption of the neighbor cell as optimal all user equipmenies in being reported in communication measurement
During amount, switching device 4 determines to indicate that the neighbor cell switches to for optimal all user equipmenies in reporting in communication measurement
The neighbor cell；When the synthesis active volume part of a neighbor cell is enough, such as it integrates active volume and is merely greater than logical
When the PRB consumed resources that the neighbor cell is optimal certain customers' equipment are indicated in letter measurement report, switching device 4 can be true
It is fixed will be reported in communication measurement in indicate that the neighbor cell switches to the neighbor cell for optimal certain customers' equipment, and will be
It is that optimal other users equipment switches to other synthesis active volumes enough that the neighbor cell is indicated in communication measurement report
Neighbor cell；When the synthesis active volume of all neighbor cells is not enough, such as comprehensive active volume is zero or less than one
During value set in advance, user equipment is no longer switched to neighbor cell by switching device 4.
For example, the user equipment selected in cell by device includes UE4, UE5, UE6, UE7 and UE8, and the cell has 3
Individual neighbor cell, respectively cell A, cell B and cell C；The communication measurement report for each user equipment that reception device 3 is received
Accuse and include information as shown in table 2 below：
| User equipment | Optimal neighbor cell | Suboptimum neighbor cell | Worst neighbor cell |
| UE4 | A | C | B |
| UE5 | A | C | B |
| UE6 | B | C | A |
| UE7 | B | A | C |
| UE8 | B | A | C |
Table 2
Also, the synthesis active volume information that device receives cell A is zero, cell B synthesis active volume information is
175, cell C synthesis active volume information are 561；Then switching device 4 is reported according to UE6, UE7 and UE8 communication measurement
The synthesis active volume of indicated optimal neighbor cell is not zero, it is determined that UE6, UE7 and UE8 are switched into neighbor cell B,
And corresponding handover operation is performed, user equipment handover request such as is sent to neighbor cell B, so that B feedbacks in neighbor cell are corresponding
Switching permitted, so that UE6, UE7 and UE8 are switched into neighbor cell B etc.；Also, switching device 4 is according to UE4's and UE5
The synthesis active volume of the indicated optimal neighbor cell of communication measurement report is zero, and the synthesis of both suboptimum neighbor cells
Active volume information is not zero, it is determined that UE4 and UE5 are switched into neighbor cell B, and performs corresponding handover operation.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to the limit of the present invention
System, it should be appreciated by those skilled in the art that it is any according to each selected user equipment provide communication measurement report and
Synthesis active volume information that the neighbor cell of the cell is provided, the neighbor cell, determines the selected user
The neighbor cell switched to needed for all or part of user equipment in equipment, and perform corresponding user equipment handover operation
Implementation, should be included in the scope of the present invention.
As a kind of preferred scheme, switching device 4 can further comprise the second determining device (not shown), updating device
(not shown) and duplicating device (not shown).
Second determining device is reported according to the communication measurement of selected user equipment, the PRB of selected user equipment
Resource consumption information and the synthesis active volume information of each neighbor cell, determine whole in selected user equipment or
The neighbor cell switched to needed for the user equipment that part does not switch, and perform corresponding user equipment handover operation；More new clothes
The PRB consumption informations according to the user equipment switched are put, the synthesis for updating the neighbor cell that user equipment is switched to can use
Capacity information；Also, duplicating device triggers the second determining device and updating device repeats operation, until being not present not
The user equipment of switching, or, the synthesis active volume information of all neighbor cells is equal to or less than predetermined volumes threshold value.
For example, predetermined volumes threshold value is 2, the communication measurement report of user equipment (UE) 4 to UE8 is included as shown in Table 1, and
And, the synthesis active volume information that device receives cell A is zero, and cell B synthesis active volume information is 175, cell C's
Comprehensive active volume information is 561, and UE4 to UE8 PRB consumed resources are respectively 40,50,80,30 and 100.
Second determining device reports that indicated optimal neighbor cell A synthesis can use according to UE4 and UE5 communication measurement
Capacity information is zero, it is determined that UE4 and UE5 wouldn't be switched, also, device is total according to UE6, UE7 and UE8 PRB consumed resources
With=synthesis active volume letters of the 80+30+100=210 more than the optimal neighbor cell B indicated by the communication measurement report of three
Breath, it is determined that selecting summation PRB consumed resources larger two user equipment (UE)s 6 and UE7 from UE6, UE7 and UE8, is switched to
Neighbor cell B.
Then, updating device has switched to neighbor cell B, and both PRB consumed resources difference according to UE6 and UE7
For 80 and 30, neighbor cell B synthesis active volume information is adjusted to 65.
Then, duplicating device does not switch according to there remains user equipment (UE) 4, UE5 and UE8, triggering second are true
Determine device and perform operation, the second determining device reports indicated suboptimum neighbor cell C's according to UE4 and UE5 communication measurement
Comprehensive active volume 561 is more than both PRB consumed resources sums 90, and UE4 and UE5 switched into neighbor cell C, and according to
The synthesis active volume of suboptimum neighbor cell A indicated by UE8 communication measurement report is zero, it is determined that wouldn't switch UE8.
Then, because the second determining device performs operation, updating device is triggered and neighbor cell C synthesis can be used into appearance
It is 471 to measure information updating.
Then, the user equipment (UE) 8 that duplicating device does not switch according to there remains, continues the second determining device of triggering and holds
Row operation, the second determining device reports indicated worst neighbor cell C synthesis active volume according to UE8 communication measurement
471 are more than its PRB resource consumption 100, and UE8 is switched into neighbor cell C.
Then, because the second determining device performs operation, updating device is triggered and neighbor cell C synthesis can be used into appearance
It is 371 to measure information updating.
Then, due to the user equipment not switched being currently not present, duplicating device no longer triggers the second determining device and held
Row operation.
Preferably, when the PRB resource consumptions sum for all user equipmenies that need to switch to a neighbor cell is small more than this
During the synthesis active volume information in area, the second determining device can be used to be selected to use with selection device 1 according to communication-related information
The similar mode of family equipment, selection actually switches to the user equipment of the neighbor cell.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to the limit of the present invention
System, it should be appreciated by those skilled in the art that any according to the report of the communication measurement of selected user equipment, selected user
The PRB resource consumption informations of equipment and the synthesis active volume information of each neighbor cell, determine selected user equipment
In the user equipment that does not switch of all or part needed for the neighbor cell that switches to, and perform corresponding user equipment switching behaviour
Make；And according to the PRB consumption informations of the user equipment switched, the synthesis for updating the neighbor cell that user equipment is switched to can
Use capacity information；And the first two operation is repeated, up to the user equipment not switched is not present, or, all neighbor cells
Comprehensive active volume information has been equal to or less than the implementation of predetermined volumes threshold value, should be included in the scope of the present invention.
The present invention with reference to the communication-related information of user equipment when selecting to be switched user equipment, so as to subtract significantly
The possibility that service quality is reduced when selected user equipment is switched to neighbor cell is lacked；In addition, invention also contemplates that
The synthesis active volume of neighbor cell, is refused by neighbor cell so as to greatly reduce user equipment, causes handover operation to fail
Possibility.
One of preferred scheme as the present invention, the device of the present embodiment performs operation before being additionally included in selection device 1
Judgment means and triggering device：Judgment means judge whether the PRB use informations of the cell meet first and make a reservation for
Condition；And when judgment means judge that the PRB use informations meet first predetermined condition, triggering device triggering selection dress
Put 1 and perform operation.
Wherein, whether first predetermined condition includes but is not limited to the PRB use informations of cell and is set in advance higher than one
Fixed value etc..
Preferably, device of the invention also includes interactive device, when judgment means judge that the PRB use informations of cell are met
During first predetermined condition, interactive device sends the synthesis active volume information of the cell to the neighbor cell of the cell, and
Request neighbor cell provides it and integrates active volume information, can to exchange the synthesis between cell cell adjacent thereto
Use capacity information.
In this preferred scheme, when the PRB of cell uses relatively low, load balancing is not performed, so as to reduce processing load.
It should be noted that the operation performed by the device of the present invention, particularly wherein calculated with load, load balancing
Related operation is triggered, uplink and downlink can be divided to perform respectively.
As a kind of preferred embodiment, device of the invention can be divided into two modules, and one of module is mainly used in
The processing in communication protocol middle level 3, another module can be further divided into multiple submodule, one cell of each submodule correspondence
And it is mainly used in the processing of the layer 1 and layer 2 of corresponding cell.Each aforementioned means that the device of the present invention is included, are such as selected
Device 1, dispensing device 2, reception device 3 and switching device 4 etc. are selected, 1/ layer 2 of layer 3 or layer can be belonged to according to its operation come corresponding
Be distributed in modules；If its operation simultaneously for 1/ layer 2 of layer 3 and layer, it can further comprise being located at respectively
Unit in two modules etc..
It should be noted that the present invention can be carried out in the assembly of software and/or software and hardware, for example, this hair
Bright device can be realized using application specific integrated circuit (ASIC) or any other similar hardware device.In one embodiment,
The software program of the present invention can realize steps described above or function by computing device.Similarly, it is of the invention soft
Part program (including related data structure) can be stored in readable medium recording program performing.In addition, the present invention some steps or
Function can employ hardware to realize, for example, as coordinating with processor so as to performing the circuit of each step or function.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.This
Outside, it is clear that the word of " comprising " one is not excluded for other units or step, and odd number is not excluded for plural number.That is stated in system claims is multiple
Unit or device can also be realized by a unit or device by software or hardware.The first, the second grade word is used for table
Show title, and be not offered as any specific order.
Claims (12)
1. a kind of method for the user equipment of a cell to be switched to its neighbor cell, wherein, this method includes following
Step：
A determines that the cell needs what is discharged according to the cell currently practical PRB use informations and the predetermined load upper limit
PRB stock numbers, the communication-related information of the user equipment in the PRB stock numbers and the cell for needing to be released,
Selection can be switched to the user equipment of the neighbor cell of the cell, wherein, the communication-related information of the user equipment includes
The related information of the communication resource, quality between the cell and the user equipment, distribution；
B sends the first solicited message to selected user equipment, and first solicited message is used to ask the user equipment to provide
The communication measurement of itself and the neighbor cell of the cell is reported；
C receives the communication measurement report that the selected user equipment is provided；
D is reported according to the communication measurement and the neighbor cell offer of the cell, the synthesis of the neighbor cell can use
Capacity information, determines the neighbor cell switched to needed for all or part of user equipment in the selected user equipment,
And perform corresponding user equipment handover operation.
2. according to the method described in claim 1, wherein, the step a comprises the following steps：
The communication-related information and use of-the user equipment in the currently practical PRB use informations of the cell, the cell
Whether the time that family equipment load balance switches to the cell exceedes scheduled time threshold value, and selection can be switched to the cell
The user equipment of neighbor cell.
3. method according to claim 1 or 2, wherein, this method is further comprising the steps of：
- judge whether the currently practical PRB use informations of the cell meet the first predetermined condition, wherein, described first makes a reservation for
Condition includes whether the currently practical PRB use informations of the cell are higher than a value set in advance；
- when judging that the currently practical PRB use informations of the cell meet first predetermined condition, perform the step a.
4. method according to claim 3, wherein, this method is further comprising the steps of：
- when judging that the currently practical PRB use informations of the cell meet first predetermined condition, in the cell and its
The comprehensive active volume information is exchanged between neighbor cell.
5. method according to claim 1 or 2, wherein, the step d comprises the following steps：
D1 is reported according to the communication measurement, the PRB resource consumption informations of selected user equipment and the synthesis are available
Capacity information, determines the phase switched to needed for the user equipment that all or part in the selected user equipment does not switch
Adjacent cell, and perform corresponding user equipment handover operation；
D2 updates the neighbor cell that the user equipment is switched to according to the PRB consumption informations of the user equipment switched
Comprehensive active volume information；
D3 repeating said steps d1 and d2, until the user equipment not switched is not present, or, the synthesis of all neighbor cells
Active volume information is equal to or less than predetermined volumes threshold value.
6. method according to claim 1 or 2, wherein, the communication-related information of the user equipment include it is following at least
One：
The communication quality information of-the user equipment；
The PRB resource consumption informations of-user equipment；
The distribution of-the user equipment is with retaining precedence information.
7. a kind of device for being used to switching to the user equipment of a cell into its neighbor cell, wherein, the device includes：
Selection device, for according to the cell currently practical PRB use informations and the predetermined load upper limit, determining described small
Area needs the PRB stock numbers discharged, and the logical of the user equipment in the PRB stock numbers that are released and the cell is needed according to described
Believe relevant information, selection can be switched to the user equipment of the neighbor cell of the cell, wherein, the communication phase of the user equipment
Closing information includes the related information of the communication resource between the cell and the user equipment, quality, distribution；
Dispensing device, for sending the first solicited message to selected user equipment, first solicited message is used to ask this
User equipment provides it and the communication measurement of the neighbor cell of the cell is reported；
Reception device, for receiving the communication measurement report that the selected user equipment is provided；
Switching device, for being provided according to the neighbor cell of communication measurement report and the cell, described adjacent small
The synthesis active volume information in area, determines to switch to needed for all or part of user equipment in the selected user equipment
Neighbor cell, and perform corresponding user equipment handover operation.
8. device according to claim 7, wherein, the selection device includes：
Second sub- selection device, for the user equipment in the currently practical PRB use informations of the cell, the cell
Communication-related information and user equipment are distributed to whether the time of the cell exceedes scheduled time threshold value, and selection can be switched
To the user equipment of the neighbor cell of the cell.
9. the device according to claim 7 or 8, wherein, the device also includes：
Judgment means, for judging whether the currently practical PRB use informations of the cell meet the first predetermined condition, wherein,
First predetermined condition includes whether the currently practical PRB use informations of the cell are higher than a value set in advance；
Triggering device, for when judging that the currently practical PRB use informations of the cell meet first predetermined condition, touching
Sending out selection device described performs operation.
10. device according to claim 9, wherein, the device also includes：
Interactive device, for when judging that the currently practical PRB use informations of the cell meet first predetermined condition,
The comprehensive active volume information is exchanged between the cell cell adjacent thereto.
11. the device according to claim 7 or 8, wherein, the switching device includes：
Second determining device, for being reported according to the communication measurement, the PRB resource consumption informations of selected user equipment with
And the comprehensive active volume information, determine the user equipment that all or part in the selected user equipment does not switch
The required neighbor cell switched to, and perform corresponding user equipment handover operation；
Updating device, for the PRB consumption informations according to the user equipment switched, updates what the user equipment was switched to
The synthesis active volume information of neighbor cell；
Duplicating device, operation is repeated for triggering second determining device and the updating device, until being not present
The user equipment not switched, or, the synthesis active volume information of all neighbor cells is equal to or less than predetermined volumes threshold value.
12. the device according to claim 7 or 8, wherein, the communication-related information of the user equipment include it is following at least
One：
The communication quality information of-the user equipment；
The PRB resource consumption informations of-user equipment；
The distribution of-the user equipment is with retaining precedence information.
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| CN105338571A (en) * | 2015-11-25 | 2016-02-17 | 江苏鑫软图无线技术有限公司 | User selection method for LTE system load balance |
| WO2018027933A1 (en) * | 2016-08-12 | 2018-02-15 | Nokia Solutions And Networks Oy | Detection-less radio resource management measurement |
| CN109041125A (en) * | 2017-06-08 | 2018-12-18 | 中国移动通信有限公司研究院 | load information interaction method and device, base station and storage medium |
| CN111263405B (en) * | 2018-11-30 | 2022-11-22 | 中国移动通信集团吉林有限公司 | Load balancing method and device for cell |
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| GB0909805D0 (en) * | 2009-06-08 | 2009-07-22 | Vodafone Plc | Load balancing |
| CN101868000A (en) * | 2010-06-28 | 2010-10-20 | 中兴通讯股份有限公司 | Method, device and base station for preempting resources |
| CN102572948A (en) * | 2010-12-23 | 2012-07-11 | 中兴通讯股份有限公司 | Method and device for optimizing load balancing |
| CN102333342A (en) * | 2011-09-23 | 2012-01-25 | 大唐移动通信设备有限公司 | District service processing method and device and facility |
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